Announcement PDF ASX Announcement | 28 November 2023 Variscan Mines Limited (ASX:VAR) MAIDEN JORC MINERAL RESOURCE ESTIMATE FOR SAN JOSE MINE OF 1.1Mt @ 9.0% ZINC, 1.2% LEAD Highlights • • • • • • • Maiden JORC Mineral Resource Estimate (‘MRE’) of 1.1Mt @ 9.0% Zinc, 1.2% Lead published for the historically producing San Jose Mine, situated within the Novales-Udias Project in Cantabria, northern Spain. Resources in the Indicated category represent 45% of the MRE with grades notably higher (10% Zn) than those in the Inferred category (8.2% Zn) providing potential for significant grade and tonnage increases with infill drilling. The deposit is considered to be of sufficient grade, quantity, and continuity to have reasonable prospects for eventual economic extraction. New, additional JORC Exploration Target has also been estimated for the wider San Jose and Udías deposits, indicating the potential for the initial MRE to grow substantially. The Exploration Target for the San Jose Mine is supplemental to the existing JORC Exploration Target over the entire Novales-Udias Project published by Variscan in Q3 2022 which remains extant. Mineralisation remains open along strike, and at depth, offering the potential to increase the MRE through follow-up drilling. The maiden MRE reported for the San Jose Mine is one of the highest grade zinc mineral resources currently owned by an ASX-listed company. Variscan Mines Limited (ASX:VAR) (“Variscan” or “the Company”) is pleased to report a maiden JORC (2012) compliant Mineral Resource Estimate (“MRE”) for the San Jose Mine, near Novales, located in Cantabria, northern Spain. Maiden JORC Mineral Resource Estimate for the San Jose Mine ERM Sustainable Mining Services team (previously CSA Global) (“ERM”), was engaged by Variscan to report a MRE for the San Jose deposit and the adjacent north-eastern part of the Udías deposit. The MRE is 1.1Mt @ 9.0% Zn and 1.2%Pb at a cut-off grade of 2% Zn. Table 1. JORC Mineral Resource Estimate for San Jose Mine and north-eastern Udías by deposit and classification reported above a 2% Zn cut-off Deposit Classification Tonnes (Kt) Zn % Pb % Zn + Pb % Indicated 490 10.0 1.7 11.7 Inferred 250 12.3 1.6 14.0 Sub-total 740 10.8 1.7 12.5 San Jose (NE) Inferred 260 4.7 0.1 4.8 Udías (NE) Inferred 90 6.5 0.4 6.8 Total Indicated 490 10.0 1.7 11.7 Inferred 590 8.2 0.8 8.9 Total 1,080 9.0 1.2 10.2 San Jose Notes: • • • • Due to effects of rounding, the total may not represent the sum of all components. Mineral Resource is reported from all blocks, classified as either Indicated or Inferred, where interpolated block grade is ≥2.0% Zn Block model is coded where blocks have been depleted by historical underground mining activities. A density value of 3 t/m3 is applied to all blocks Figure 1. JORC Mineral Resource Estimate for San Jose Mine and north-eastern Udías by deposit 2 The MRE has been estimated for the San Jose deposit and included the adjacent north-eastern part of the Udías deposits, both of which were previously mined for zinc during the 20th century. The Project is centred around the former producing San Jose underground zinc-lead mine with a large surrounding area of exploration opportunities over the 9 km Novales Trend, which includes a number of satellite underground and surface workings. Underground and surface drilling has been carried out since the 1960’s, with a drill hole database containing 1,105 drill-holes for approximately 94,808m. Variscan carried out surface and underground drilling programs in 2022 and 2023, targeting extensions to the known zones of mineralisation as well as targeting new zones of mineralisation. The mineralisation is classified as Mississippi Valley-type (“MVT”), hosted within a stratiform dolomitic unit. The MRE is classified as a combination of Indicated and Inferred categories and has been reported in accordance with the JORC Code (2012) 1, with geological and sampling evidence sufficient to assume geological and grade continuity within the volumes classified as Indicated. The MRE classification levels are based upon an assessment of geological understanding of the deposit, geological and grade continuity, drillhole spacing, quality control results, search and interpolation parameters, and an analysis of available density information. The deposit is considered to be of sufficient grade, quantity, and continuity to have reasonable prospects for eventual economic extraction. Figure 2. Mineral Resource Estimate categories in 3D View 1 Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. The JORC Code, 2012 Edition. Prepared by: The Joint Ore Reserves Committee of The Australasian Institute of Mining and Metallurgy, Australian Institute of Geoscientists and Minerals Council of Australia (JORC). 3 Figure 3. Mineral Resource Estimate categories in Plan View The San Jose Mine sits within the wider Novales-Udias Project, which is located in northern Spain. It is an area with a rich mining history of MVT Zn-Pb deposits, including this Project and the world-class Reocin MVT Zn-Pb deposit located 8 km to the south-east. The region has sufficient infrastructure for water and power to support a future mining operation, and a sizeable workforce resident in nearby regional towns. Metallurgical testwork was recently commissioned by Variscan, with results pending; however, the very simple ore mineralogy, the bulk of which is zinc sulfide, as well as a historical records of past concentrates averaging ~60% Zn and 65-75% Pb, indicate that the ores are amenable to straightforward processing and beneficiation. The high-grade nature of the San Jose Mine is evident. Variscan’s own drilling has returned very high grades 2. It is understood that the Run of Mine grade between 1970 and 1988 was approximately 6.3% Zn and 1.7% Pb 3. 2 Refer ASX announcements: 3rd February 2020, 3rd March 2020, 16th March 2020, 1st April 2020, 9th March 2021, 25th May 2021, 15th June 2021, 4th August 2021, 15th March 2022, 7th July 2022, 25th August 2022, and 2nd March 2023 3 Historical production data sourced from the School of Mines in Torrelevega, Cantabria 4 Additional JORC Exploration Target indicates the potential scale and grade of the San Jose Mine The above reported MRE sits within a larger JORC Exploration Target of 3Mt - 6Mt, with grade ranges of 7 - 11% Zn and 0.3 - 1.6% Pb*. *The potential quantity and grade of this exploration target is conceptual in nature, there is currently insufficient exploration completed to support a mineral resource of this size and it is uncertain whether continued exploration will result in the estimation of a Mineral Resource. The Exploration Target has been prepared in accordance with the JORC Code (2012). Table 2. JORC Exploration Target Tonnage and Grade Estimate Ranges Range Tonnes (Mt) Zn % Pb % Lower Estimate 3.0 7.0 0.3 Upper Estimate 6.0 11.0 1.6 Figure 5. JORC Exploration Target indicates scope for Mineral Resource to grow 5 The following observations and assessment of historical records and drilling data within and surrounding the San Jose Mine and Novales-Udías Trend were used to guide and support the estimation of the Exploration Target. A significant part of the Exploration Target is located beyond the limits of historical and recent drilling in the central part of the San Jose deposit, but is supported by the following: • Style of mineralisation seen to exhibit significant lateral continuity. • Information from historical surface drill holes in the area surrounding the San Jose Mine and extending towards the NE (Novales), and towards SW (Udías). • Soil geochemistry data; and • An assessment of largely under-explored mineral trends parallel to those observed at San Jose and occurring in the sub-surface of neighbouring carbonate hills, and observed in several artisanal mines (e.g. La Andrea, Eloisa, Eucaliptal, Mina Grande, Mina Pequeña, and a few others that were the object of limited diamond drilling by Variscan). To further support the reporting of an Exploration Target, a conceptual block model for part of the volumes supporting the Exploration Target was constructed by estimating a categorical distribution of logged mineralisation into a block model. Grade was not interpolated into this model, but a tonnage was estimated using an assumed density of 2.7 t/m3. This estimated tonnage was used to guide the reported tonnage ranges in the Exploration Target. The grade ranges are based upon a review of the Zn and Pb grade ranges estimated in the Mineral Resource model for San Jose and Udías. A significant volume of the estimated Exploration Target is located beyond the conceptual block model, and not adjacent to the San Jose stopes, as discussed in the earlier bullet points. The Exploration Target indicates the potential scale and grade of mineralisation in the San Jose deposit if additional exploration work is conducted. It is uncertain if further exploration will result in the estimation of a Mineral Resource upgrade. The Exploration Target is concentrated around the MRE deposits and over the same strike length. As these areas are well understood by Variscan it presents a de-risked opportunity and Variscan’s planned field work for calendar year 2024 will include drilling over the extent of the Exploration Target. The Exploration Target for the San Jose Mine is supplemental to the JORC compliant Exploration Target over the larger Novales-Udias Project published by Variscan in Q3 2022 (refer ASX announcement 22 July 2022) which remains extant. Supplementary Information for the Mineral Resource Estimate The following subsections are provided consistent with ASX Listing Rule 5.8.1, with further information provided in the JORC Code (2012) – Table 1, which is attached to this announcement. Geology and Geological Interpretation The MVT deposit mineralisation is hosted within a grey dolostone unit underlain and overlain by limestone beds. Mineralisation is epigenetic resulting from fluids sourced from deep faults in the underlying siliciclastic sediments and circulating through the carbonates. There are at least two phases of dolomitisation, with mineralisation likely related to the latter. Lead-zinc development appears in the middle to lower part of the dolomitic unit. The dolomite is more iron-rich in areas of Pb-Zn; the mineralogy is relatively simple with sphalerite - galena ± marcasite ± calamine. 6 Mineralisation is commonly brecciated, banded and colloform, and occurs as ‘bag’-shaped karst fills, stratiform lenticular, sub-horizontal lenses and vertical fault fills. Mineralisation is not continuous and can be irregular in thickness, usually thinning away from the faults. Thicknesses of mineralisation vary from 30 cm to several meters and the individual mineralisation lenses are separated by barren dolostone. Grades vary from <1% to >50% Zn, and drill samples often return grades of >10% Zn. Lead is subordinate, usually <3% but can reach grades of 50% in some areas. CSA Global used geological models provided by Variscan to guide the modelling of mineralisation domains which are of sufficient quality to support a Mineral Resource estimate. The geological interpretations were carried out on 10 m spaced northing sections (±5 m data windows), with polygons digitised to capture the zones of mineralisation. Polygons were grouped together to form lenses, and 3D wireframe solid models constructed. Some internal dilution of barren dolostone was captured in the domain models. Additional models were interpreted by CSA Global after reviewing the remnant mineralisation not included in the Variscan interpretations. Often the remnant mineralisation hugs or is adjacent to mining voids. CSA Global also interpreted zones of mineralisation in north-eastern Udías, and in the north-eastern region of the Project, including near the underground portal, where Variscan have recently completed initial drilling. Drilling Techniques Historical drilling was completed between the 1950’s and 1980’s by Real Compañía Asturiana de Minas (“RCAM”) - Asturiana de Zinc Sociedad Anonima (“AZSA”), a large mining company operating the Project during that time. The historical underground drilling is understood by Variscan to be all core drilling, and no details with regard to the drilling have been identified in the historical data. The historical drilling supporting the MRE include 925 diamond holes for 89,680 m. All historical drill hole collars were located by Variscan and have been re-surveyed, and the down hole drill directions measured with compass for bearing and dip, and the holes have been used to support the estimation of the MRE. Variscan’s drilling comprises underground and surface diamonds drill holes completed between 2020 and 2023, with 180 diamond holes for 5,128 m. Sampling Techniques Variscan drill core were sampled as half core with sample lengths ranging between 0.4 m and 1.2 m, averaging 1.0 m, and include at least 1 m of core adjacent to the start and finish of logged mineralisation. Sample recoveries are typically >90%. Detailed geological logging was carried out for all Variscan drill-holes, with all holes photographed before and after cutting of core. Samples were logged for lithology, veins and veining intensity, alteration and mineralisation. Descriptions and recordings of historical sampling methods are limited in their availability, with evidence that at least one of the main project operators, Asturiana de Zinc, assayed half core. Variscan have located and digitised hardcopies of geological logs for 755 of the historical underground diamond drill holes and 115 historical surface diamond drill holes. Holes were logged to varying degrees of detail, however most holes have lithological logs and record the presence and nature of mineralisation. Sample Analysis Method All Variscan half core samples were sent directly to the ALS Seville laboratory for preparation and subsequent analysis according to industry standards with crushing, pulverizing and splitting prior to sample analysis. The sample sizes taken for the drilling reported are considered suitable for the deposit type and style of 7 mineralisation at this stage of exploration. The laboratory is accredited (ALS Seville) and the techniques for Zn/Pb are considered suitable. No descriptions of the historical assaying and laboratory procedures used have been located by Variscan. It is unknown whether the techniques used were partial or total. QAQC results from the Variscan drilling are regarded as satisfactory and the Competent Person supports their use in the Mineral Resource estimate. No QAQC results were located for the historical drilling. Estimation Methodology A block model constrained by the interpreted geological wireframes was constructed with a parent cell size of 5 m (E) by 5 m (N) by 5 m (RL), with sub-celling to 1.25 m E by 1.25 m N by 1.25 m RL to maintain the resolution of the mineralised domains. Drill samples were composited to 1 m or 2 m lengths, dependent upon the average sample length for each mineralisation domain. Top cuts for Zn were applied to reduce the effect of outlier grade values, and block grades for Zn, Pb, and the oxides for Zn (ZnOx) and Pb (PbOx) were interpolated using either ordinary kriging (Zn and Pb) or Inverse Distance squared (ZnOx and PbOx). A minimum of 8 and maximum of 22 samples were used to interpolate the parent cells. Block grades were validated both visually and statistically. All modelling was completed using Datamine software. The block model has been depleted by underground mine voids, including decline and stopes, which have been surveyed by Variscan. A bulk density value of 3.0 t/m3 was applied to all blocks, based upon an assessment of 689 samples measured for density using the Archimedes method. Mineral Resource Classification The Mineral Resource is classified as a combination of Indicated and Inferred. The classification of the Mineral Resources considered geological understanding of the deposit, quality of the samples, quality and quantity of density data, drill hole spacing, and the quality of the block grade estimates. Geological understanding and quality of samples is sufficient to assume geological and grade continuity in the Indicated volumes. Cut-off Grades The Mineral Resource is reported above a cut-off grade of 2% Zn, which is considered by Variscan and the Competent Person to be reasonable, with this cut-off grade used for reporting of other MVT style Mineral Resources. Mining and Metallurgical Methods Future mining activities will use underground methods, as have been used during the latter part of the 20th Century. Variscan Mines has undertaken metallurgical studies on the San Jose mineralisation, with results pending. Based on extensive past experience of similar projects (i.e., low formation temperature MVT-style zinc-lead), and the fact that ore mineralogy at San Jose is strongly dominated by zinc sulphide, with only subordinate galena and occasional trace contents of iron sulphide, it is inferred that ore beneficiation will be straightforward and produce a high-grade zinc concentrate. 8 Figure 6. Cut-off grade sensitivity: Zinc Grade and Tonnage Curve Variscan’s Managing Director & CEO, Stewart Dickson said, “This maiden mineral resource estimate for the San Jose Mine is a significant milestone for the Company. It validates the success of our exploration activities to date and establishes a platform upon which we can continue to build a resource inventory as well as advance mine re-start assessments. We are particularly pleased that the MRE is very high grade with significant tonnage upside growth in the order of 3 - 6 times based on the Exploration Target published simultaneously. Mineralisation remains open along strike and to depth, which presents the Company with a path to potential resource inventory growth through additional exploration drilling as much of the 9km Novales Trend has yet to be incorporated into a formal resource. We are looking forward to continuing to deliver on our stated development pathway.” ENDS This ASX announcement has been approved by the Board and authorised for issue by Mr Stewart Dickson, Managing Director and CEO, Variscan Mines Limited 9 For further information, please contact: Variscan Mines Limited (ASX:VAR) Stewart Dickson Managing Director & CEO E: stewart.dickson@variscan.com.au T: +44 (0) 7799 694195 Media & Investor Enquiries The Capital Network Julia Maguire E: julia@thecapitalnetwork.com.au P: +61 2 8999 3699 About Variscan Mines Limited (ASX:VAR) Variscan Mines Limited (ASX:VAR) is a growth oriented, natural resources company focused on the acquisition, exploration and development of high-quality strategic mineral projects. The Company has compiled a portfolio of highimpact base-metal interests in Spain, Chile and Australia. Its primary focus is the development of its advanced zinc projects in Spain. The Company’s name is derived from the Variscan orogeny, which was a geologic mountain building event caused by Late Paleozoic continental collision between Euramerica (Laurussia) and Gondwana to form the supercontinent of Pangea. To learn more, please visit: www.variscan.com.au For more information Follow us on LinkedIn Follow us on Twitter Visit our investor website: www.variscan.com.au 10 Competent Person Statement The information in this report that relates to Mineral Resources is based on, and fairly reflects, information compiled by Mr David Williams and Dr. Michael Mlynarczyk. Mr. David Williams is a full-time employee of ERM and is a Member of the Australian Institute of Geoscientists (RPGeo). Dr. Michael Mlynarczyk is a Principal consultant for Redstone Exploration Services, a geological consultancy acting as an external consultant to Variscan Mines and is a Professional Geologist (PGeo) of the Institute of Geologists of Ireland, and European Geologist (EurGeol) of the European Federation of Geologists, as well as Fellow of the Society of Economic Geologists (SEG). Mr David Williams and Dr. Michael Mlynarczyk have sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which they are undertaking to qualify as Competent Persons as defined in the 2012 Edition of the Australasian Code for the Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code). Mr David Williams and Dr. Michael Mlynarczyk consent to the disclosure of the information in this report in the form and context in which it appears. Dr. Michael Mlynarczyk assumes responsibility for matters related to Sections 1 and 2 of JORC Table 1, while Mr David Williams assumes responsibility for matters related to Section 3 of JORC Table 1. The information in this report that relates to Exploration Targets is based on, and fairly reflects, information compiled by Mr David Williams. David Williams is a full-time employee of ERM and is a Member of the Australian Institute of Geoscientists (RPGeo). David Williams has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the Australasian Code for the Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code). Mr David Williams consents to the disclosure of the information in this report in the form and context in which it appears. Forward Looking Statements Forward-looking statements are only predictions and are not guaranteed. They are subject to known and unknown risks, uncertainties and assumptions, some of which are outside the control of the Company. Past performance is not necessarily a guide to future performance and no representation or warranty is made as to the likelihood of achievement or reasonableness of any forward-looking statements or other forecast. The occurrence of events in the future are subject to risks, uncertainties and other factors that may cause the Company’s actual results, performance or achievements to differ from those referred to in this announcement. Given these uncertainties, recipients are cautioned not to place reliance on forward looking statements. Any forward-looking statements in this announcement speak only at the date of issue of this announcement. Subject to any continuing obligations under applicable law and the ASX Listing Rules, the Company, its directors, officers, employees and agents do not give any assurance or guarantee that the occurrence of the events referred to in this announcement will occur as contemplated. 11 APPENDIX A - JORC TABLE 1 Section 1 Sampling Techniques and Data Criteria • JORC Code explanation Sampling techniques • Nature and quality of • sampling (eg cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling. • Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. • Aspects of the determination of mineralisation that are Material to the Public Report. In cases where ‘industry standard’ work has been • done this would be relatively simple (eg ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a • 30 g charge for fire assay’). In other cases more explanation may be required, such as where there • is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (eg • submarine nodules) may warrant disclosure of detailed information. The drilling data of the San Jose mine and adjacent area that is referenced in this report relate to historical surface and underground drilling conducted by previous operators, as well as to the underground and surface drilling conducted in the area by Variscan Mines in the years 2020-2023. The complete information on the multiple drilling campaigns of various vintages is extensive and can be found in prior ASX press releases by Variscan Mines from 3rd February 2020, 3rd March 2020, 16th March 2020, 1st April 2020, 9th March 2021, 25th May 2021, 15th June 2021, 4th August 2021, 15th March 2022, 7th July 2022, 25th August 2022, and 2nd March 2023 on the website www.variscanmines.com.au. Historical data is sourced from previous Project operator exploration activities, performed from the 1950’s to the late 1990’s. Historical data includes both underground and surface core drilling, of which the paperformat core logs and location maps are held at the School of Mines and Energy Engineering at Torrelavega, a faculty of the University of Cantabria, Spain. Due to the incomplete nature of the historical drill hole data, including procedures, a comment on the sample representativity or calibration of measurement tools or systems used by historical workers cannot be made, and cannot be considered ‘industry standard’ by modern standards. Historical drilling includes 666 holes (52,148 m) drilled underground at San Jose; 105 holes (6,294 m) drilled underground at Udías; and 154 holes (31,238 m) drilled from surface. All drill collars have been located and re-surveyed by Variscan and the hole azimuth and dips measured at the collar positions. Variscan Mines underground drilling data referenced in this report comprises 177 diamond drill holes (totalling 4,806 m). Details of Variscan’s underground drilling campaigns are provided in Variscan Mines ASX press releases (see website www.variscan.com.au). In addition to underground drilling, limited surface diamond drilling was conducted by Variscan Mines. Drilling consisted of 3 surface drill holes (totalling 322 m of core), and details are provided in the Variscan Mines’ ASX 2nd March 2023 press release. All diamond drilling of Variscan Mines was sampled using industry best practice methods (diamond drilled core cut along its length to produce half core). Samples were sent to the accredited ALS Seville laboratory for analysis. Samples are considered representative and include waste intervals on the periphery of mineralised intersections. It is assumed that the equipment used was calibrated correctly as per the internal SOP’s at ALS Seville. Drill type (eg core, reverse • circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (eg core diameter, • triple or standard tube, depth of diamond tails, face- • Variscan Mines diamond BQTK (40.77mm diameter) core was drilled using Hagby Onram 100, Atlas Copco Diamec 252 and Hilti portable drill rigs. PQ and HQ diamond core was drilled using a Rolatec RL1000 drill rig. Neither Variscan Mines drillholes nor the historical drillholes have employed oriented core methods. The historic surface and underground drilling is understood to be all • • • Drilling techniques • • Commentary 12 Criteria • JORC Code explanation • sampling bit or other type, whether core is oriented and if so, by what method, etc). • Drill sample recovery • • • Logging • • • Sub-sampling techniques and sample preparation • • • Commentary core drilling. No details of the drilling techniques employed have been identified in the historic data. This includes reference to core diameter(s), core orientation methods, and downhole survey data. No records of the type of drill rig used have been identified. Details of the historical drilling can be found in ASX press releases by Variscan Mines from the following dates: 3rd Feb 2020, 3rd March 2020, 16th March 2020 and 1st April 2020 on the website www.variscan.com.au Method of recording and • assessing core and chip sample recoveries and results assessed. Measures taken to maximise sample recovery and ensure representative nature of the • samples. Whether a relationship exists between sample recovery • and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material. Core recovery for the Variscan Mines drill holes is typically >90%. Core recovery is routinely recorded for all drill holes and recorded in drill hole logs. The lowest drill hole recovery recorded is 63.7% mean recovery; this value is anomalous compared to recoveries recorded for the remaining drill holes. As a rule drill holes with such low recoveries have been re-drilled. No other methods have been used to maximise sample recovery. The relationship between sample recovery and grade has not been assessed. No records of drill core recovery have been identified for most of the historical drillholes and no historical drill core has been preserved. Where recovery data is available, it typically includes recoveries >90%, however, recoveries as low as 60% have also been recorded. Given the absence of core recovery data, it is not possible to assess the potential relationship between sample recovery and grade. The absence of drill recovery data means that the referenced historical assays may be marginally incorrect. No assessment or estimation of these effects has been made due to the lack of detailed data. Whether core and chip • samples have been geologically and geotechnically logged to a • level of detail to support appropriate Mineral Resource estimation, mining • studies and metallurgical studies. Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography. The total length and percentage of the relevant intersections logged. Detailed geological and geotechnical logging has been carried out for all of Variscan Mines drill holes. There is sufficient geotechnical and geological logging data to support the Mineral Resource estimate. All Variscan Mines drill holes were logged for lithology, veins, alter